The role of deformable models [1, 2, 3], in medical image analysis [4] has been increasing over the past two decades. The location of a pathology, the study of anatomical structures, computer-assisted surgery, or quantification of tissue volumes are a few of the applications in which deformable models have proved to be very effective. Due to their importance, the study and improvement of these models is still a challenge [5, 6, 7, 8]. These techniques are used to give a highlevel interpretation of low-level information such as contours or isolated regions.